Climate Change Chart of Kuopio, Finland

Overview of climate changes

Temperature changes

Averaged across calendar months, monthly mean temperature shows a difference of +2.18 °C in the more recent period. This is an unweighted mean of the monthly means, rather than a day-weighted annual average, and describes the aggregate comparison rather than a change in every month. The largest monthly increase was in January, with a difference of +4.89 °C; these are monthly mean temperatures, not daytime maxima.

Changes in snowfall

Averaged across calendar months, mean daily snowfall had a difference of +0.87 mm/day compared with the earlier period. This is an unweighted mean of monthly averages, not a day-weighted annual figure, and it does not establish an increase in every month. The largest monthly increase was in February, with a difference of +3.47 mm/day; the largest monthly decrease was in November, with a difference of -1.31 mm/day. These are mean daily snowfall amounts, not monthly totals.

Changes in rainfall

Averaged across calendar months, mean daily rainfall had a difference of +0.30 mm/day compared with the earlier reference period. This unweighted average of monthly means is not a day-weighted annual average, and it does not imply that rainfall increased in every month. The largest monthly increase was in July, at +0.96 mm/day, while the largest monthly decrease was in April, at -0.24 mm/day. These figures describe mean daily amounts, not monthly rainfall totals.

Changes in sunshine duration

Mean daily sunshine duration had an unweighted difference across calendar-month averages of -0.12 hours/day in the more recent period. That aggregate does not mean the same difference occurred in each month. The largest monthly increase was in June, with a difference of +1.32 hours/day, while the largest decrease was in May, with a difference of -1.28 hours/day. The monthly mean daily hours describe average sunshine duration, not the conditions of every day.